Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
177653 | Dyes and Pigments | 2008 | 6 Pages |
Abstract
The third-order nonlinearity of an organic–inorganic hybrid silica film covalently doped and dispersed with C.I. Disperse Red 1 was studied using the Z-scan technique. The micropores in the sol–gel derived silica matrix were smaller than the dye ligand which led to dye aggregation. A nonlinear refractive index of −3.4 × 10−9 esu and a nonlinear susceptibility of 5.9 × 10−10 esu were recorded at 1064 nm. The large blue shift of the absorption band due to dye aggregation resulted in an enhanced two-photon absorption. The observed nonlinearity is attributable to both two-photon absorption resonance and the refraction change induced by the enlarged π-delocalization conjugation between the dye and the silica matrix.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Jiangtian Li, Peng Jiang, Chenyang Wei, Jianlin Shi,